The 2500 kVA 33kV Three-Phase Aluminum Winding Power Transformer is a three-phase power transformer for substation, heavy industrial and utility duty where capacity and network conditions are specified more closely than for standard distribution units. Ratings are configured per the technical parameters below and confirmed against your system data.
Cooling method, vector group, impedance and tap range are engineered against your load profile and network parameters. Each unit is routine-tested before dispatch, and engineering support is available from enquiry through to commissioning.
Technical Parameters & Ratings
| Rated Capacity | 2500 kVA |
|---|---|
| Primary Voltage (U1) | 33,000 V (33 kV) |
| Secondary Voltage (U2) | 415 V / 240 V (3-Phase 4-Wire) |
| Vector Group | Dyn11 |
| Rated Frequency | 50 Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Primary Current (I1) | 43.74 A |
| Secondary Current (I2) | 3478.0 A |
| Guaranteed No-Load Loss (P0) | 2300 W |
| Guaranteed Load Loss (Pk at 75°C) | 17500 W |
| Short-Circuit Impedance (Uk) | 5.0% |
| HV Insulation Level | LI 170 / AC 70 (33kV Class) |
| Temperature Rise Limits | Top Oil ≤ 50K, Winding ≤ 55K (45°C Ambient) |
| Creepage Distance | ≥ 31 mm/kV (Outdoor Tropicalized Porcelain) |
| Core & Coil Weight | 3600 kg |
| Insulating Oil Weight | 2100 kg |
| Total Assembled Weight | 7200 kg |
| Overall Footprint (L×W×H) | 2100 mm × 1350 mm × 2200 mm |
| Governing Standards | IEC 60076, BS 171, SON NIS, NERC Code |
Technical Highlights
- This product combines dependable transformer platform design, flexible project configuration, and practical export-oriented construction. It is suitable for applications requiring stable electrical performance, configurable voltage ratios, outdoor durability, and documentation support for international project supply.
Application Scenarios
- Solar power plants
- Wind farm collector and grid interface systems
- Photovoltaic station and inverter interconnection projects
- Battery energy storage systems (BESS)
- Renewable energy substations and export EPC projects
Key Features
- 2500 kVA rated capacity for renewable interconnection, step-up, or project-side power conversion
- Designed for solar, wind, PV, or energy-storage power system applications
- Configurable voltage ratio for inverter-side, collector-side, or grid-side connection
- Oil-immersed construction for dependable cooling in outdoor renewable projects
- Project-oriented accessory and monitoring options available
- Suitable for IEC-based renewable projects and export EPC supply
Optional Configurations
- Low-voltage side rating and voltage ratio
- Frequency: 50 Hz or 60 Hz
- Vector group and tapping range
- Copper or aluminum winding
- Cooling method, accessory package, and monitoring option
- Tank structure, coating system, and special environmental adaptation
- Color, nameplate language, and document package
- Ambient temperature, altitude, and installation condition adaptation
Frequently Asked Questions
What duty is this power transformer built for?
It is intended for transmission, substation and heavy industrial duty where capacity and network conditions are specified more closely than for standard distribution units.
Which ratings are available?
Capacity, voltage, vector group and impedance are confirmed against your system data rather than a fixed list. Share your network parameters and we will return a configuration proposal.
How is cooling selected?
Cooling method (ONAN, ONAF, OFAF or OFWF) is chosen against rated capacity, load profile, ambient conditions and installation. We will recommend an option once we have your operating data.
Which standards does it comply with?
Power transformers are designed to IEC 60076 and the GB equivalent. Where your project specifies ANSI/IEEE or another standard, confirm the applicable clauses before production.
What do you need to provide a quotation?
Rated capacity, primary and secondary voltage, frequency, vector group, impedance, cooling requirement, altitude and ambient conditions, quantity.
Typical Applications
The 2500 kVA 33kV Three-Phase Aluminum Winding Power Transformer is specified in projects such as:
- Substation step-up and step-down duty
- Heavy industrial process power supply
- Generator step-up for small plant and embedded generation
- Grid interconnection where impedances are specified
Manufacturing & Factory Testing
Transformer manufacturing at our works, with quality control checkpoints through production and complete routine testing before dispatch:
- Core cutting and winding with controlled process parameters
- Vacuum drying and oil filling (oil types) or epoxy casting (dry types)
- Routine tests: winding resistance, ratio and polarity, no-load and load loss, applied and induced voltage
- Type test certificates from accredited laboratories available on request
Technical Drawing
Delivery, Warranty & OEM Support
- Typical lead time: 30 days from order confirmation for standard ratings; custom configurations are confirmed at order stage
- Warranty: 2 years, with technical support available throughout the service life
- OEM / ODM supported: private labelling, nameplate language and document packages
- Seaworthy export packing; documentation set includes routine test reports, installation manuals and general arrangement drawings
Need a quotation for the 2500 kVA 33kV Three-Phase Aluminum Winding Power Transformer? Send your single line diagram and ratings to our sales team and our engineers will confirm the configuration, lead time and price.
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